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CNIH Entrance Exam | QUESTIONS AND ANSWERS | 100% VERIFIED
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CNIH Entrance Exam | QUESTIONS AND ANSWERS | 100% VERIFIED
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CNIH Entrance Exam | QUESTIONS AND ANSWERS | 100% VERIFIED Atoms - Smallest whole unit of matter. Protons and neutrons located in nucleus, electrons located in energy shells Element - Pure substance composed of all the same type of atom. example: O2 Compound - Made up of 2 or more atoms of different elements bond together in a fixed ratio- pure substances b/c of the same particles example: H2O (water) or NH3 (ammonia) Molecule - Formed when atoms join together - could be either an element or compound Symbiosis - Two organisms live in close contact and at least one benefits. Mutualism - 2 organisms live in close contact and both benefit study aid: MUTUALism (mutual benefit) Parasitism - 1 organism lives in or on another organism and feeds on that organism example: lice study aid: PARASITE - lice Invasive species - Species introduced by humans into new environments with unforeseen consequences. Monoculture - Crops grown in large fields containing a single kind of plant. Climate change - Large quantities of greenhouse gasses produced and emitted that trap thermal energy in the atmosphere. Extirpation - Habitat loss and population which can lead to loss of a species from a particular region - isolated habitat loss. Sustainability - How ecosystems support organisms, remain diverse and productive now, without compromising future generations' use. Cytoplasm - Jelly like fluid inside cells - surrounds organelles and contains a "soup" of chemicals needed for cell processes. Vacuole - Membrane sacks - store food and water (in plants, maintains cell shape) Lysosome - Vacuole with digestive enzymes - breaks down food, involved in apoptosis (controlled cell death) Cell membrane - Filled with proteins and enzymes - controls what comes in and out of the cell. Endoplasmic Reticulum - System of tubes made from membranes - transports proteins and other material throughout the cell Ribosome - Very small structures made of DNA and pr otein - found in ER Golgi body - Membrane tubes in a bundle with buds of membrane coming off - sorts, packages and ships proteins. Mitochondria - Powerhouse of the cell. Produces energy from food. Performs cellular respiration. Nuclear membrane - Allow s genetic code to communicate with ribosomes. Controls what comes in and out of the cell. Nucleus - Control center of cell, has a membrane which holds and protects chromatin. Nucleolus - Circular structure inside nucleus - makes ribosomesThe benefits of buying summaries with Stuvia:
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